X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;ds=inline;f=src%2Forg%2Fxwt%2FScheduler.java;h=f4338582b011d6e97a675f6617f273903560a98c;hb=fa49b56b41be191e83bcf8222381fee2c4e0355b;hp=8a5cd3226d9f5d286abf80d23580d78e1276be69;hpb=2ccad2219888c9942f62ae8b4d4207f655690948;p=org.ibex.core.git

diff --git a/src/org/xwt/Scheduler.java b/src/org/xwt/Scheduler.java
index 8a5cd32..f433858 100644
--- a/src/org/xwt/Scheduler.java
+++ b/src/org/xwt/Scheduler.java
@@ -8,13 +8,34 @@ import org.xwt.util.*;
 /** Implements cooperative multitasking */
 public class Scheduler {
 
+    // FIXME: prepending events messes with keysate -- make a "no re-ordering" invariant?
+
     // Public API Exposed to org.xwt /////////////////////////////////////////////////
 
     private static Scheduler singleton;
     public static interface Task { public abstract void perform() throws Exception; }
+
+    /** adds a task to the back of the queue */
     public static void add(Task t) { singleton.runnable.append(t); }
+
+    /** adds a task to the front of the queue (guaranteed to run next) */
+    public static void addAtFront(Task t) { singleton.runnable.prepend(t); }
+
     public static void init() { if (singleton == null) (singleton = Platform.getScheduler()).run(); }
 
+    private static Task current = null;
+    public static Task current() { return current; }
+
+    /** synchronizd so that we can safely call it from an event-delivery thread, in-context */
+    public static synchronized void renderAll() {
+        for(int i=0; i<Surface.allSurfaces.size(); i++) {
+            Surface s = ((Surface)Surface.allSurfaces.elementAt(i));
+            do { s.render(); } while(s.abort);
+        }
+    }
+
+    
+
     // API which must be supported by subclasses /////////////////////////////////////
 
     /**
@@ -32,17 +53,28 @@ public class Scheduler {
     protected static Queue runnable = new Queue(50);
     public void defaultRun() {
         while(true) {
-            Task t = (Task)runnable.remove(true);
+            current = (Task)runnable.remove(true);
             try {
-                t.perform();
-                // FEATURE: be smarter about this
-                if (t != Surface.renderAll) add(Surface.renderAll);
+                synchronized(this) {
+                    for(int i=0; i<Surface.allSurfaces.size(); i++) {
+                        Surface s = (Surface)Surface.allSurfaces.elementAt(i);
+                        if (current instanceof JSFunction) {
+                            s._mousex = Integer.MAX_VALUE;
+                            s._mousey = Integer.MAX_VALUE;
+                        } else {
+                            s._mousex = s.mousex;
+                            s._mousey = s.mousey;
+                        }
+                    }
+                    current.perform();
+                }
+                renderAll();
             } catch (JSExn e) {
-                Log.log(Scheduler.class, "a JavaScript thread spawned with xwt.thread() threw an exception:");
-                Log.log(Scheduler.class, e.toString());
+                Log.info(Scheduler.class, "a JavaScript thread spawned with xwt.thread() threw an exception:");
+                Log.info(Scheduler.class, e);
             } catch (Exception e) {
-                Log.log(Scheduler.class, "a Task threw an exception which was caught by the scheduler:");
-                Log.log(Scheduler.class, e);
+                Log.info(Scheduler.class, "a Task threw an exception which was caught by the scheduler:");
+                Log.info(Scheduler.class, e);
             }
             // if an Error is thrown it will cause the engine to quit
         }